Introduction
CA28MWV is a martensitic stainless steel grade specified in ASTM A743 for general corrosion-resistant castings. Casting process options include Investment Casting, Shell Molding Casting and Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | CA28MWV |
| Material Type | Stainless Steel |
| Sub Type | Martensitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Grades
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM A743 | Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application | 03 | CA28MWV | UNS J91422 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM A743Edition 03 |
|---|---|
| C | 0.20–0.28 % |
| Si | ≤ 1.0 % |
| Mn | 0.50–1.00 % |
| P | ≤ 0.030 % |
| S | ≤ 0.030 % |
| Cr | 11.0–12.5 % |
| Ni | 0.50–1.00 % |
| Mo | 0.90–1.25 % |
| V | 0.20–0.30 % |
| W | 0.90–1.25 % |
Heat Treatment
ASTM A743–03 · Annealing alternative
| Step | Operation | Temperature |
|---|---|---|
| 1 | Anneal | ≥ 1400 °F / ≥ 760 °C |
ASTM A743–03 · Quenching and tempering
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Heat | 1875–1925 °F / 1025–1050 °C | — |
| 2 | Quench | — | air or oil |
| 3 | Temper | ≥ 1150 °F / ≥ 620 °C | — |
Mechanical Properties
| Property | ASTM A743Edition 03 |
|---|---|
| Tensile Strength | ≥ 140 ksi[1] ≥ 965 MPa[1] |
| Yield Strength | ≥ 110 ksi[1] ≥ 760 MPa[1] |
| Elongation | ≥ 10 %[1] |
| Reduction of Area | ≥ 24 %[1] |
| Brinell Hardness | 302–352 HB[2] ≤ 269 HB[3] |
Notes
ASTM A743 · Edition 03
[1] Tensile Strength/Yield Strength/Elongation/Reduction of Area: Applies only when Supplementary Requirement S12 is specified; Condition: heat-treatment route (1) only; separately cast keel block per S12.2 unless S12.3 agreement applies
[2] Brinell Hardness: Applies only when Supplementary Requirement S14 is specified; Condition: heat-treatment route (1); non-austenitic; per manufacturer–purchaser agreement (S14.2)
[3] Brinell Hardness: Applies only when Supplementary Requirement S14 is specified; Condition: annealed condition; non-austenitic; per manufacturer–purchaser agreement (S14.2)
Welding Conditions
N/A
Applications
Typical casting applications include pump and valve castings for chemical processing, marine, refining and power-generation equipment.
Last Updated: October 13, 2026